Immortal Dreams by Abbie Zanders

theurgy \THEE-ur-jee\ – the working of a divine or supernatural agency in human affairs.
On the outside, there is nothing remarkable about Ellie Cavannaugh. Of average height, average looks, she is sensible and wholly competent.
But inside, she has the soul of a goddess.
Nik Deimos is a god. The son of Ares and Aphrodite, his duplicitous nature often has mortals cowering in fear or writhing in lust. Except for his personal assistant, that is.
She seems wholly unaffected. And it intrigues him. The more he learns about Ellie, the more he is convinced she was meant to be his.
There is only one problem: Ellie is already married.